Assessment of Entropy Generation and Heat Transfer in Three-Dimensional Hybrid Nanofluids Flow Due to Convective Surface and Base Fluids

Upreti, Himanshu; Pandey, Alok Kumar; Kumar, Manoj

doi:10.1615/jpormedia.2021036038

Cited by 70 publications

(30 citation statements)

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“…For that reason, the combination of the two nanoparticle types can lead to the improvement of expected thermos-physical properties and achieve accepted stability. [18][19][20][21][22][23][24][25] Therefore, the combination of porous medium and nanofluids for enhancing heat transfer has become the focus of researchers and many studies have been conducted in this context. [26][27][28] The purpose of this article is to review, summarize, and discuss the results of published papers on heat convection of nanofluids in cavities filled with porous medium.…”

Section: Introductionmentioning

confidence: 99%

Newtonian and non‐Newtonian nanofluids with entropy generation in conjugate natural convection of hybrid nanofluid‐porous enclosures: A review

et al. 2021

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Section: Introductionmentioning

confidence: 99%

Newtonian and non‐Newtonian nanofluids with entropy generation in conjugate natural convection of hybrid nanofluid‐porous enclosures: A review

et al. 2021

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“…To consolidate the important predictions from various investigations on buoyant motion of nanofluids and entropy generation, a detailed review and discussions on different constraints influencing the buoyant transport and entropy production in finite geometries and passages have been discussed in detail [35][36][37][38]. Some of the recent interesting works combining porous media and magnetic field over stretching sheets and channels can be found in the literature [39][40][41][42][43][44]. The analysis of 2-D and 3-D nanofluid convective flow in the presence of chemical reaction, variable viscosity and thermal conductivity has been investigated in detail [45][46][47][48][49][50].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Entropy Generation and Energy Transport of Cu-Water Nanoliquid in a Tilted Vertical Porous Annulus

Swamy

Sankar²,

Reddy

2021

Int. J. Appl. Comput. Math

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The physical structure in several industrial applications which includes cooling of electronic equipment, heat exchangers, nuclear reactors, and solar collectors, could aptly represent the cylindrical annular porous geometry. The prior knowledge of buoyant flow and thermal transport rates in this geometry provides the vital information to the design engineers. In this article, we analyze the convective nanoliquid flow and associated thermal dissipation as well as entropy generation rates in an inclined annular enclosure filled with nanoliquid saturated porous medium. The vertical surfaces of inner and outer cylinders are maintained at uniform, but different temperatures and horizontal boundaries are kept insulated. The momentum equations are modeled utilizing the Darcy law, the coupled partial differential equations are numerically solved adopting the time splitting and line over relaxation techniques. For the numerical simulations, a vast range of parameters such as the Darcy Rayleigh number (10 ≤ Ra D ≤ 10 3 ), annulus inclination angle (0°≤ γ ≤ 60°), aspect ratio (0.5 ≤ Ar ≤ 2) and nanoparticle volume fraction (0 ≤ φ ≤ 0.05) are considered. The contributions of heat transfer and fluid friction entropies to global entropy production in the geometry are determined through the Bejan number. The numerical results reveal that the convective flow, heat transfer and entropy generation rates could be controlled with the aid of cavity inclination angle. It is found that the shallow annular enclosure gives better thermal performance with minimum entropy generation regardless of Ra D , γ and φ. Further, the results are in excellent agreement with standard benchmark simulations. The predicted results could provide some vital information to enhance the system efficiency.

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“…Khan et al 33 analyzed the impact of entropy generation in the heat transfer of Williamson nanofluid flow in the presence of chemical reactions and Joule heating. Upreti et al 34 investigated the assessment of entropy generation and heat transfer in three-dimensional hybrid nanofluid flows due to the convective surface and base fluids. Nayak et al 18,35,36 investigated how entropy generation can be utilized to enhance heat transportation in the MHD flow of Newtonian/non-Newtonian nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

Darcy–Forchheimer up/downflow of entropy optimized radiative nanofluids with second‐order slip, nonuniform source/sink, and shape effects

et al. 2021

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This article examines the influence of single-walled carbon nanotube (SWCNT)/multi-walled carbon nanotube (MWCNT) nanoparticles shapes on the radiative up and down flow of nanofluids past a thin needle. This nanofluid flow is considered in the presence of Darcy-Forchheimer effects, thermal radiation, Wu's slip, and non-uniform heat source/sink. Brick, cylinder, platelet, and blade shapes of nanoparticles are considered. Numerical solutions are attained by a wellknown shooting technique. A comprehensive discussion regarding the effects of physical parameters on velocity, temperature, skin friction coefficient, and local Nusselt number is carried out. Outcomes reveal that fluid velocities of SWCNT/MWCNT-Water nanofluids behave in the opposite manner in up and down flows of nanofluids in the order of brick, cylinder, platelet and blade-shaped nanoparticles. The porosity parameter regulates the heat transfer rate efficaciously.The surface viscous drag intensifies for the nanofluids involving the nanoparticles in the order of their shapes as brick, blade, cylinder, and platelet.

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Assessment of Entropy Generation and Heat Transfer in Three-Dimensional Hybrid Nanofluids Flow Due to Convective Surface and Base Fluids

Cited by 70 publications

References 0 publications

Newtonian and non‐Newtonian nanofluids with entropy generation in conjugate natural convection of hybrid nanofluid‐porous enclosures: A review

Newtonian and non‐Newtonian nanofluids with entropy generation in conjugate natural convection of hybrid nanofluid‐porous enclosures: A review

Analysis of Entropy Generation and Energy Transport of Cu-Water Nanoliquid in a Tilted Vertical Porous Annulus

Darcy–Forchheimer up/downflow of entropy optimized radiative nanofluids with second‐order slip, nonuniform source/sink, and shape effects

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